Okay, so 101 Gadgets for the Evil Genius is a book, not a gadget, but inside the book is a whole world of gadgets, and how to make each of them on a budget that even the most modest evil villain can afford. Most of the projects in the book can be done for $30 or less, and all of them can be constructed by anyone, even the absolute electronic novice.

You don't have to be an evil villain bent on world domination to enjoy this book, but I would imagine it helps. In its pages, 101 Gadgets for the Evil Genius has instructions on how to build a parabolic microphone so you can hear conversations at great distances, build a nanny cam to spy on intruders or the babysitter while you're away from home, put together a hidden briefcase camera, alter photographic evidence, and even digitally disguise your voice on the telephone. That's not all, the book contains more gadgets and projects to bring out the secret agent in everyone, but promise that you'll use your newfound powers for good, not evil, okay? 101 Gadgets for the Evil Genius is available at any bookstore, but you can find it on Amazon for $16.47.